HIGH-SECRECY CYLINDER MECHANISM FOR LOCKING DEVICES Russian patent published in 1998 - IPC

FIELD: locking devices. SUBSTANCE: cylinder mechanism has body with spring-biased pins radially located in row inside body. Cylinder is connected with span-piece and carries coding pins which interact with corresponding spring-biased pins of body. Made in cylinder additionally along its generating line are circular slots with radial holes. Seated in radial holes are additional coding pins which are biased by own springs in direction from center towards periphery of cylinder. Located between body walls and cylinder is additional bush with its own spring-biased and intermediate pins. Bush and cylinder are spring-loaded relative to each other through turning angle limiter which is connected with cylinder and when turning it rests against bush strip. Aforesaid embodiment of cylinder mechanism allows for displacement in time and space through key turning angle of operation of different coding surfaces of key and respectively of coding strips of cylinder, and this makes impossible ringing-out of locking mechanism for unauthorized opening of lock and improves its secrecy. EFFECT: higher efficiency. 4 dwg